| Niagara Falls to Koscian | 4,169.95 mi (6,710.88 km) |
| Niagara Falls to Koscielisko | 4,396.59 mi (7,075.62 km) |
| Niagara Falls to Koscierzyna | 4,139.35 mi (6,661.64 km) |
| Niagara Falls to Kostrzyn | 4,178.36 mi (6,724.42 km) |
| Niagara Falls to Kostrzyn nad Odra | 4,080.60 mi (6,567.09 km) |
| Niagara Falls to Koszalin | 4,074.85 mi (6,557.84 km) |
| Niagara Falls to Kowary | 4,189.59 mi (6,742.49 km) |
| Niagara Falls to Kozienice | 4,361.94 mi (7,019.87 km) |
| Niagara Falls to Kozuchow | 4,144.99 mi (6,670.71 km) |
| Niagara Falls to Kozy | 4,346.30 mi (6,994.70 km) |
| Niagara Falls to Krakow | 4,366.76 mi (7,027.62 km) |
| Niagara Falls to Krapkowice | 4,279.61 mi (6,887.37 km) |
| Niagara Falls to Krasnik | 4,412.02 mi (7,100.46 km) |
| Niagara Falls to Krasnystaw | 4,442.68 mi (7,149.81 km) |
| Niagara Falls to Krosno | 4,447.10 mi (7,156.92 km) |
